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sourceRevisionAtLastExport: 33f2fb0e53d135f0ee17cfccd9d993eb2a6f47de targetRevisionAtLastExport: 31340cbd9add103f586d501b0c3354b7b182abc0
79 lines
3.0 KiB
JavaScript
79 lines
3.0 KiB
JavaScript
// Copyright 2008 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Test that setter accessors added to the prototype chain are called
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// when setting properties.
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// Test that accessors added to the prototype chain are called
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// eventhough there are inline caches for setting the property
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function F() {
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this.x = 42;
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this.y = 87;
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}
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// Force the inline caches to monomorphic state.
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new F(); new F();
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// Add a setter for x to Object.prototype and make sure it gets
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// called.
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var result_x;
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Object.prototype.__defineSetter__('x', function(value) { result_x = value; });
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var f = new F();
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assertEquals(42, result_x);
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assertTrue(typeof f.x == 'undefined');
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// Add a setter for y by changing the prototype of f and make sure
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// that gets called too.
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var result_y;
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var proto = new Object();
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proto.__defineSetter__('y', function (value) { result_y = value; });
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var f = new F();
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f.y = undefined;
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f.__proto__ = proto;
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F.call(f);
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assertEquals(87, result_y);
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assertTrue(typeof f.y == 'undefined');
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// Test the same issue in the runtime system. Make sure that
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// accessors added to the prototype chain are called instead of
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// following map transitions.
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//
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// Create two objects.
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var result_z;
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var o1 = new Object();
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var o2 = new Object();
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// Add a z property to o1 to create a map transition.
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o1.z = 32;
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// Add a z accessor in the prototype chain for o1 and o2.
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Object.prototype.__defineSetter__('z', function(value) { result_z = value; });
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// The accessor should be called for o2.
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o2.z = 27;
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assertEquals(27, result_z);
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assertTrue(typeof o2.z == 'undefined');
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